Can diamonds communicate with each other?
In the quantum world they do.
Einstein famously called quantum entanglement "spooky action at a distance," since the particles seemed to be communicating faster than the speed of light. Researchers at the Clarendon Laboratory at the University of Oxford in England have utilized quantum entanglement to get one small diamond to communicate with another small diamond.
What once would be considered magic is normal when you shrink down small enough. Our world is a wonderland.
https://www.insidescience.org/news/quantum-world-diamonds-can-communicate-each-other